121200523 has 8 divisors (see below), whose sum is σ = 122512608. Its totient is φ = 119892864.

The previous prime is 121200517. The next prime is 121200539. The reversal of 121200523 is 325002121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121200523 - 2⁵ = 121200491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121200497 and 121200506.

It is not an unprimeable number, because it can be changed into a prime (121200323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98490 + ... + 99712.

It is an arithmetic number, because the mean of its divisors is an integer number (15314076).

Almost surely, 2^121200523 is an apocalyptic number.

121200523 is a deficient number, since it is larger than the sum of its proper divisors (1312085).

121200523 is a wasteful number, since it uses less digits than its factorization.

121200523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 121200523 is about 11009.1109086974. The cubic root of 121200523 is about 494.8818178562.

Adding to 121200523 its reverse (325002121), we get a palindrome (446202644).

The spelling of 121200523 in words is "one hundred twenty-one million, two hundred thousand, five hundred twenty-three".